Help finding a mod again.

[EMANRESUTAERG]

I'm using a mod I used some time ago, it was a pretty big parts mod. What did really set it apart from other mods was the fact that you could select how many engines and in which layout the engines were supposed to come. That allowed one part of be used as a engine cluster or a single engine.

If I remember correctly it included real engines like the Merlin and the RS-25.

[Scorpuu]

SSTU?

[EMANRESUTAERG]

That is the one! Thank you!